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| SHOWA DENKO 's organic borates have a structure and characteristics as described below: |
| Grade |
P3B |
BP3B |
| Z- |
 |
 |
| CAS No. |
12307-06-4 |
-- |
| Melting point (c) |
140-144 |
187-194 |
Solubility (g/L)
･Methanol
･Acetone
･DMSO |
16.2
1,040
> 50 |
0.9
296
256 |
Toxicological information LD50
Ames test |
>2,000 mg/kg
Negative |
>2,000 mg/kg
Negative |
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| Grade |
N3B |
MN3B |
| Z- |
 |
 |
| CAS No. |
-- |
-- |
| Melting point (c) |
140-141 |
174-179℃ |
Solubility (g/L)
･Methanol
･Acetone
･DMSO |
0.7
> 100
> 50 |
> 100
> 50 |
Toxicological information LD50
Ames test |
>2,000 mg/kg
Negative |
>2,000 mg/kg
Negative |
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| When used in combination with specific sensitizing dyes, our organic borates can cause polymerization and decoloration, as follows: |
| (1) Polymerization |
| R・ |
+ |
M(Monomer) |
→ |
RM・ |
| RM |
+ |
M |
→ |
RMn・ |
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| (2)
Decoloration |
| R・ |
+ |
Dye・ |
→ |
Dye-R
decolored |
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■Polymerization
N3B, one of the organic borates in the table on Page 1, is mixed with a sensitizing dye having its absorption band in the visible region. The composition is added to multifunctional monomers and acrylic resin to form a film of about 10 μm. The film shows high sensitivity to g-, h-, and i-rays. The sensitivity is especially high with regard to g- and h-rays. |
■Decoloration
A composition is made by mixing BP3B, another organic borate, with a dye that absorbs near infrared rays of up to 822 nm in wavelength (IRT). When the composition is irradiated with near infrared rays, IRT's coloring system disappears. |
The information contained herein is based upon data considered true and accurate. However, SHOWA DENKO K.K. accepts
no responsibility for any liability or risk which may result from the handling and use of products. |
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